<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
{% if request.session.username %}
<p>
  欢迎{{request.session.username}}登录
</p>
<P>
  <a href="/blog/logout">退出登录</a>
</P>
<p>
  <a href="/blog/login">进入我的笔记</a>
</p>
{% else %}
    {% if request.COOKIES.username %}
<P>
  欢迎{{request.COOKIES.username}}登录
</P>
<P>
  <a href="/blog/logout/">退出登录</a>
</P>
<p>
  <a href="/blog/login">进入我的笔记</a>
</p>
  {% else %}
  <p>
     <a href="/blog/login">登录</a>
  </p>
  <p>
     <a href="/blog/reg/">注册</a>
  </p>
  {% endif %}
{% endif %}

</body>
</html>